Black Panther

During an interview with Michel Martin on the radio program "All Things Considered," Danai Gurira (Okoye) said that the language spoken by Wakandans is a real language, Xhosa, a South African language characterized by clicks and glottal stops: "It's the same language that is native to Nelson Mandela. It's from the Cape region of South Africa. And Mr. John Kani, who plays T'Challa's father, T'Chaka, he's Xhosa. And so he - they started and agreed to that language being the language of Wakanda in Captain America: Civil War (2016)."

(at around 39 mins) When Shuri gives T'challa the new shoes (called sneakers), she mentions that they absorb sound & allow silent footsteps, which T'challa demonstrates. Later in the film (at around 52 mins), T'challa runs up a ramp wearing the sneakers... accompanied by the sound of footsteps.

The main credits for the people of Wakanda are colored according to the tribe:

• the cast credits for the members of the Wakandan royal family are in purple/gold, the royal colors.
• Forest Whitaker's credit is in purple, as befits Zuri's role as adviser to the royal family.
• Lupita Nyong'o's credit is shaded green, the River Tribe color.
• Danai Gurira's credit is shaded red, the Dora Milaje color.
• Daniel Kaluuya's credit is shaded blue, the Border Tribe color.
• Winston Duke's credit is represented by an ape face, since the Jabari have no tribe color.

In advance of the film's release in India, the filmmakers removed all references to the Hindu god Hanuman presumably to avoid generating any controversy surrounding the film.

Edited into La case du siècle: Restituer l'art africain: les fantômes de la colonisation (2020)